CN108055222A - Data processing method and intelligent terminal based on ofdm system - Google Patents
Data processing method and intelligent terminal based on ofdm system Download PDFInfo
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- CN108055222A CN108055222A CN201711041949.6A CN201711041949A CN108055222A CN 108055222 A CN108055222 A CN 108055222A CN 201711041949 A CN201711041949 A CN 201711041949A CN 108055222 A CN108055222 A CN 108055222A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
- H04J13/0062—Zadoff-Chu
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2663—Coarse synchronisation, e.g. by correlation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2669—Details of algorithms characterised by the domain of operation
- H04L27/2671—Time domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2669—Details of algorithms characterised by the domain of operation
- H04L27/2672—Frequency domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26136—Pilot sequence conveying additional information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
Abstract
The invention discloses a kind of data processing method and intelligent terminal based on ofdm system, which includes：Communication base station is inserted into frequency domain reference signal in frequency domain data equal intervals；After frequency domain data after insertion frequency domain reference signal is carried out equivalence transformation, obtain being superimposed with the frequency-region signal of frequency domain reference signal and frequency domain data；IFFT conversion is carried out to frequency-region signal, obtains being superimposed with the time-domain signal of time domain reference signal and time domain data；Time-domain signal is sent to intelligent terminal.By the data processing method, synchronous progress can be improved, improves user experience.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of data processing method and intelligence based on ofdm system
Terminal.
Background technology
OFDM (Orthogonal Frequency Division Multiplexing) i.e. orthogonal frequency division multiplexis are
Several orthogonal sub-channels are broken a channel into, high-speed data signal is converted into parallel low speed sub-data flow, is modulated to each
It is transmitted in subchannel.
In a communications system, the bandwidth that channel can be provided is usually more much broader than the bandwidth needed for transmission all the way signal.
If a channel only transmits signal all the way and wastes very much, in order to make full use of the bandwidth of channel, it is possible to use
The method of OFDM frequency division multiplexings.
But ofdm system is more demanding to synchronization, it can not be to the number of transmission if without accurate synchronous receiving terminal
According to reliably being recovered.At present, preferable system can be obtained to realize using serial PN sequences in numerous synchronous method
Performance.
Specifically scheme is：Based on ofdm system, PN sequences and OFDM symbol are synchronized into transmission.In pilot frame structure
Including acquisition phase and synchronized tracking stage, PN sequences are only sent in acquisition phase；In the synchronized tracking stage, PN its superimpositions arrive
It is sent in OFDM symbol sequence.The position started by the method confirmation OFDM symbol, to realize the synchronization of ofdm system.
But the above method, the progress synchronously calculated is slower, influences user experience.
The content of the invention
The invention mainly solves the technical problem of providing a kind of data processing method based on ofdm system and intelligence eventually
End can improve synchronous progress, improve user experience.
In order to solve the above technical problems, first technical solution that the present invention uses is：It provides a kind of based on ofdm system
Data processing method, the data processing method includes：Communication base station is in frequency domain data equal intervals insertion frequency domain reference letter
Number；It will be inserted into after the frequency domain data after the frequency domain reference signal carries out equivalence transformation, obtain being superimposed with the frequency domain ginseng
Examine the frequency-region signal of signal and the frequency domain data；IFFT conversion is carried out to the frequency-region signal, obtains being superimposed with time domain reference
The time-domain signal of signal and time domain data；The time-domain signal is sent to intelligent terminal.
In order to solve the above technical problems, second technical solution that the present invention uses is：It provides a kind of based on ofdm system
Data processing method, the method for the data processing includes：Intelligent terminal reception is superimposed with time domain reference signal and time domain number
According to time-domain signal；The time-domain signal received is subjected to FFT transform, is converted to and is superimposed with frequency domain reference signal and frequency domain
The frequency-region signal of data；The frequency-region signal is subjected to equivalence transformation, obtains the frequency inserted with the frequency domain reference signal
Numeric field data；The frequency domain reference signal with the frequency domain data is separated, obtains the frequency domain data.
In order to solve the above technical problems, the 3rd technical solution that the present invention uses is：A kind of intelligent terminal is provided, it is described
Intelligent terminal include telecommunication circuit, memory and processor, the processor respectively with the telecommunication circuit and the memory
It is of coupled connections；The telecommunication circuit is used to that data to be communicated, obtained and transmitted with base station；The memory is described for storing
The computer program and the generated intermediate data when performing the computer program that processor performs；The processor is held
During the row computer program, any data processing method of the present invention is realized.
The beneficial effects of the invention are as follows：The communication base station of the present invention is in frequency domain data equal intervals insertion frequency domain reference letter
Number, after the frequency domain data after insertion frequency domain reference signal is carried out equivalence transformation and IFFT conversion, obtain being superimposed with time domain reference
The time-domain signal of signal and time domain data, and it is sent to intelligent terminal.By the data processing method, can improve it is synchronous into
Degree improves user experience.
Description of the drawings
Fig. 1 is the structure diagram that data transmission system of the present invention unifies embodiment；
Fig. 2 is the flow diagram of one embodiment of data processing method the present invention is based on ofdm system；
Fig. 3 is the processing procedure signal structure schematic diagram of data processing method one embodiments of the Fig. 2 based on ofdm system；
Fig. 4 is that the present invention is based on the flow diagrams of another embodiment of the data processing method of ofdm system；
Fig. 5 is the structure diagram of one embodiment of intelligent terminal of the present invention.
Specific embodiment
The present invention provides a kind of data processing method and intelligent terminal based on ofdm system, for make the purpose of the present invention,
Technical solution and technique effect definitely, it is clear, the present invention is described in more detail below, it should be understood that described herein
Specific implementation regulations be only used for explain the present invention, be not intended to limit the present invention.
Refering to Fig. 1, data transmission system of the present invention unifies the structure diagram of embodiment.The data transmission of present embodiment
System includes communication base station 10 and receiving terminal 20, and communication base station 10 is carried out data transmission by wireless channel and receiving terminal 20.Its
In, receiving terminal 20 includes intelligent terminal, such as smart mobile phone, tablet computer.
In a communications system, the resource of the bandwidth of wireless channel is limited, and during data transmission, wirelessly
Usually wider than the bandwidth needed for data more of the bandwidth that channel is provided in order to make full use of the bandwidth of channel, use
The method transmission data of OFDM frequency division multiplexings.But ofdm system is to the more demanding of synchronization and channel estimation.It is same in order to improve
The progress of step, present embodiment provide a kind of data processing method based on ofdm system from the angle of communication base station.
Refering to Fig. 2, Fig. 2 is the flow diagram of one embodiment of data processing method the present invention is based on ofdm system.
201：Communication base station is inserted into frequency domain reference signal in frequency domain data equal intervals.
In the present embodiment, communication base station is inserted into frequency domain reference signal in frequency domain data equal intervals, specifically, communication
Frequency domain reference signal is inserted into base station at equal intervals in the OFDM symbol of frequency domain data according to specific pilot interval.
In a specific embodiment, using Zadoff-Chu sequence as frequency domain reference signal.According to Fourier
The characteristic of conversion, the sequence being inserted at equal intervals on frequency domain can form periodic signal in time domain after ifft, have it is good from
Correlation properties.
The pilot interval for being generally basede on ofdm system is 6, and in the present embodiment, pilot interval 8, therefore identical
In the case of number of sub carrier wave, the required number of pilots of data processing method of present embodiment will be lacked, i.e., frequency domain is joined
Examining the number of signal will lack, and the bandwidth resources of occupancy reduce.
202：After frequency domain data after insertion frequency domain reference signal is carried out equivalence transformation, obtain being superimposed with frequency domain reference letter
Number and frequency domain data frequency-region signal.
In the present embodiment, after the frequency domain data after being inserted into frequency domain reference signal is carried out equivalence transformation by communication base station,
Obtain being superimposed with the frequency-region signal of frequency domain reference signal and frequency domain data.
Specifically, transmit the frequency domain after insertion frequency domain reference signal respectively by least the first subcarrier and the second subcarrier
Data；The frequency domain reference signal data 0 that first subcarrier transmits are replaced, retain frequency domain data；Second subcarrier is transmitted
Frequency domain data data 0 replace, retain frequency domain reference signal.So as to obtain being superimposed with frequency domain reference signal and frequency domain data
Frequency-region signal.
203：IFFT conversion is carried out to frequency-region signal, obtains being superimposed with the time domain letter of time domain reference signal and time domain data
Number.
In the present embodiment, communication base station carries out IFFT conversion to frequency-region signal, obtains being superimposed with time domain reference signal
With the time-domain signal of time domain data.The time-domain signal from entire OFDM symbol with periodicity and symmetry, and these
Characteristic causes receiving terminal, there are many expression way, to facilitate receiving terminal in varying environment in the related operation for calculating synchronization timing function
It is lower to select corresponding computing mode, improve synchronous progress.
Specifically, since frequency domain reference signal is inserted at equal intervals, the reference letter after IFFT is converted in time domain
Number it is periodic.Frequency domain data is converted to time domain data after IFFT is converted, the reference signal of the time domain data and time domain
It is superimposed to form time-domain signal.In addition, the reference signal being superimposed by this way, does not add any redundancy actually
Information, simply have the pseudo- effect being superimposed in time domain.
Simultaneously according to the characteristic of Fourier transform, the energy of time domain reference signal is the 1/ of frequency domain reference signal energy at this time
8, then, reference signal reduces the interference of data-signal.
204：Time-domain signal is sent to intelligent terminal.
In the present embodiment, the time-domain signal for being superimposed with time domain reference signal and time domain data is sent to by communication base station
Intelligent terminal, so that intelligent terminal can aid in carrying out precise synchronization by reference to the auto-correlation and cross correlation of signal,
So as to improve synchronous progress.
In order to clearly illustrate the variation of data-signal in present embodiment data handling procedure, refering to Fig. 3, Fig. 3 is Fig. 2
The processing procedure signal structure schematic diagram of one embodiment of data processing method based on ofdm system.
As shown in figure 3, frequency domain reference signal 31 is inserted at equal intervals in the OFDM symbol of frequency domain data 32, by equivalence
After conversion, the frequency-region signal for having frequency domain reference signal 31 and frequency domain data 32 of superposition is formed.Wherein, the first subcarrier is transmitted
Frequency-region signal in frequency domain reference signal 31 replaced with data 0, only retain frequency domain data 32；And what the second subcarrier was transmitted
Frequency domain data 32 in frequency-region signal is replaced with data 0, only retains frequency domain reference signal 31.Then frequency-region signal is passed through into IFFT
The time-domain signal of time domain reference signal 33 and time domain data 34 is obtained after conversion.
The prior art is different from, the communication base station of present embodiment is in frequency domain data equal intervals insertion frequency domain reference letter
Number, after the frequency domain data after insertion frequency domain reference signal is carried out equivalence transformation and IFFT conversion, obtain being superimposed with time domain reference
The time-domain signal of signal and time domain data, and it is sent to intelligent terminal.By the data processing method, can improve it is synchronous into
Degree improves user experience.
Refering to Fig. 4, Fig. 4 is that the present invention is based on the signals of the flow of another embodiment of the data processing method of ofdm system
Figure.With reference to Fig. 1, present embodiment is to provide a kind of data processing method based on ofdm system from the angle of receiving terminal.Wherein,
The receiving terminal of present embodiment is intelligent terminal.
401：Intelligent terminal receives the time-domain signal for being superimposed with time domain reference signal and time domain data.
Wherein, intelligent terminal includes smart mobile phone, tablet computer etc..
In the present embodiment, intelligent terminal receives and is superimposed with time domain reference signal and time domain number transmitted by communication base station
According to time-domain signal.
Meanwhile it is default in intelligent terminal have reference signal, the reference signal be the above embodiment in communication base station exist
The frequency domain reference signal that frequency domain data is inserted at equal intervals transforms to the sequence of time-domain signal.Then, the reference signal and intelligence are whole
End received be superimposed with time domain reference signal and the time-domain signal of time domain data have good auto-correlation and cross correlation.
In one of which embodiment, using the good autocorrelation performance of Zadoff-Chu sequence, default reference signal is
Zadoff-Chu sequence.
Further, intelligent terminal matches time domain reference signal with default reference signal, determines synchronization timing
Function determines the position of frequency domain reference signal according to synchronization timing function.But pilot tone is first OFDM in each time slot
It is inserted into symbol and penultimate OFDM symbol.Because the periodicity of reference sequences, Domain Synchronous point is correctly distinguished, then
Compare the timing function in each cycle, computation complexity is higher, therefore present embodiment will connect using maximum likelihood algorithm
The time-domain signal received is matched with default reference signal, determines synchronization timing function, carrys out simple accurately timing.
402：The time-domain signal received is subjected to FFT transform, is converted to and is superimposed with frequency domain reference signal and frequency domain data
Frequency-region signal.
In the present embodiment, intelligent terminal is by synchronization timing function region timesharing domain synchronous point, according to the Domain Synchronous
The time-domain signal received is carried out FFT transform by point, is converted into being superimposed with the frequency-region signal of frequency domain reference signal and frequency domain data.
403：Frequency-region signal is subjected to equivalence transformation, obtains the frequency domain data inserted with frequency domain reference signal.
In the present embodiment, frequency-region signal is carried out equivalence transformation by intelligent terminal, is obtained inserted with frequency domain reference signal
Frequency domain data.
Specifically, the frequency-region signal by FFT transform includes subcarrier information, and subcarrier is used for the transmission of data-signal,
It needs to obtain the data-signal that subcarrier is transmitted by way of demodulation.In the present embodiment, intelligent terminal passes through demodulation
The data-signal that is transmitted from subcarrier of mode, i.e. the frequency domain data inserted with frequency domain reference signal.
404：Frequency domain reference signal with frequency domain data is separated, obtains frequency domain data.
In the present embodiment, intelligent terminal separates frequency-region signal with frequency domain data, obtains frequency domain data, wherein, frequency
Numeric field data is the data message that communication base station is sent to intelligent terminal.
In the above embodiment, carried out data transmission between communication base station and intelligent terminal based on ofdm system.Tool
Body says that the time-domain signal that communication base station is superimposed with time domain reference signal and time domain data by the way that frequency domain data is converted into is sent
To intelligent terminal, the time-domain signal for being superimposed with time domain reference signal and time domain data received is reduced to frequency domain by intelligent terminal
Data are to realize the transmission of data.The data transmission method of the present invention so that intelligent terminal can be by reference to signal from phase
It closes with cross correlation to aid in carrying out precise synchronization, so as to improve synchronous progress.
It is different from the prior art, the intelligent terminal reception of present embodiment is superimposed with time domain reference signal and time domain data
Time-domain signal, while reference signal is preset in intelligent terminal, and the reference signal for communication base station in frequency domain data at equal intervals
The frequency domain reference signal of insertion transforms to the sequence of time-domain signal, using reference signal and the time-domain signal that receives from phase
It closes characteristic and confirms synchronization timing function, and corresponding data processing method is confirmed according to the synchronization timing function.Pass through the data
Processing method can improve synchronous progress, improve user experience.
Refering to Fig. 5, Fig. 5 is the structure diagram of one embodiment of intelligent terminal of the present invention.The intelligent terminal may include intelligence
It can mobile phone, iPad one kind.
Specifically as shown in figure 5, present embodiment intelligent terminal 50 includes：Telecommunication circuit 501, processor 502 and processor
503.Wherein, processor 502 is of coupled connections respectively with telecommunication circuit 501 and processor 503.Also, telecommunication circuit 501 can be used for
Information is communicated, obtained and transmitted with communication base station；Processor 502 perform at work program data can realize it is any of the above-described
From the data processing method based on ofdm system of the angle of receiving terminal in embodiment.
The foregoing detailed description of specific steps on data processing method, it is no longer superfluous herein to talk.
Be different from the prior art, the reception of present embodiment intelligent terminal be superimposed with time domain reference signal and time domain data when
Domain signal, while reference signal is preset in intelligent terminal, and the reference signal is inserted at equal intervals for communication base station in frequency domain data
The frequency domain reference signal entered transforms to the sequence of time-domain signal, utilizes reference signal and the auto-correlation of the time-domain signal received
Characteristic confirms synchronization timing function, and confirms corresponding data processing method according to the synchronization timing function.At the data
Reason method can improve synchronous progress, improve user experience.
The foregoing is merely embodiments of the present invention, not thereby limit scope of patent protection of the invention, every profit
The equivalent structure or equivalent flow shift made with description of the invention and accompanying drawing content is directly or indirectly used in other phases
The technical field of pass, is included within the scope of the present invention.
Claims (10)
1. a kind of data processing method based on ofdm system, which is characterized in that the data processing method includes：
Communication base station is inserted into frequency domain reference signal in frequency domain data equal intervals；
It will be inserted into after the frequency domain data after the frequency domain reference signal carries out equivalence transformation, obtain being superimposed with the frequency domain ginseng
Examine the frequency-region signal of signal and the frequency domain data；
IFFT conversion is carried out to the frequency-region signal, obtains being superimposed with the time-domain signal of time domain reference signal and time domain data；
The time-domain signal is sent to intelligent terminal.
2. the data processing method according to claim 1 based on ofdm system, which is characterized in that the frequency domain reference letter
Number be Zadoff-Chu sequence.
3. the data processing method according to claim 1 based on ofdm system, which is characterized in that it is described will insertion described in
After the frequency domain data after frequency domain reference signal carries out equivalence transformation, obtain being superimposed with the frequency domain reference signal and the frequency
The step of frequency-region signal of numeric field data, specifically includes：
Transmit the frequency domain number after being inserted into the frequency domain reference signal respectively by least the first subcarrier and the second subcarrier
According to；
The frequency domain reference signal data 0 that first subcarrier transmits are replaced；
The frequency domain data data 0 that second subcarrier transmits are replaced,
Obtain being superimposed with the frequency-region signal of the frequency domain reference signal and the frequency domain data.
4. the data processing method according to claim 1 based on ofdm system, which is characterized in that the communication base station exists
The step of frequency domain data equal intervals insertion frequency domain reference signal, specifically includes：
Communication base station is inserted into frequency domain reference signal at equal intervals in the OFDM symbol of frequency domain data according to specific pilot interval.
5. the data processing method according to claim 4 based on ofdm system, which is characterized in that the pilot interval is
8。
6. a kind of data processing method based on ofdm system, which is characterized in that the method for the data processing includes：
Intelligent terminal receives the time-domain signal for being superimposed with time domain reference signal and time domain data；
The time-domain signal received is subjected to FFT transform, is converted to the frequency for being superimposed with frequency domain reference signal and frequency domain data
Domain signal；
The frequency-region signal is subjected to equivalence transformation, obtains the frequency domain data inserted with the frequency domain reference signal；
The frequency domain reference signal with the frequency domain data is separated, obtains the frequency domain data.
7. the data processing method according to claim 6 based on ofdm system, which is characterized in that the intelligent terminal connects
After the step of receiving the time-domain signal for being superimposed with time domain reference signal and time domain data, the time-domain signal that will be received
It is further included before the step of carrying out FFT transform, being converted to the frequency-region signal for being superimposed with frequency domain reference signal and frequency domain data：
The intelligent terminal matches the time domain reference signal with default reference signal, determines synchronization timing function；
The position of the frequency domain reference signal is determined according to synchronization timing function.
8. the data processing method according to claim 7 based on ofdm system, which is characterized in that the intelligent terminal will
The time domain reference signal is matched with default reference signal, and the step of determining synchronization timing function specifically includes：
The intelligent terminal is matched the time-domain signal with the default reference signal by maximum likelihood algorithm, really
Determine synchronization timing function.
9. the data processing method according to claim 7 based on ofdm system, which is characterized in that the default reference
Signal is Zadoff-Chu sequence.
10. a kind of intelligent terminal, which is characterized in that the intelligent terminal includes telecommunication circuit, memory and processor,
The processor is of coupled connections respectively with the telecommunication circuit and the memory；
The telecommunication circuit is used to that data to be communicated, obtained and transmitted with base station；
The memory is used to store the computer program of the processor execution and is performing computer program when institute
The intermediate data of generation；
When the processor performs the computer program, realize as described in any in claim 6-9 based on ofdm system
Data processing method.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041949.6A CN108055222B (en) | 2017-10-30 | 2017-10-30 | Data processing method based on OFDM system and intelligent terminal |
| US16/760,456 US11405255B2 (en) | 2017-10-30 | 2018-10-30 | Data processing method and intelligent terminal based on orthogonal frequency division multiplexing (OFDM) system |
| PCT/CN2018/112802 WO2019085913A1 (en) | 2017-10-30 | 2018-10-30 | Data processing method based on ofdm system, and smart terminal |
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| CN201711041949.6A CN108055222B (en) | 2017-10-30 | 2017-10-30 | Data processing method based on OFDM system and intelligent terminal |
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| CN108055222B CN108055222B (en) | 2020-09-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085913A1 (en) * | 2017-10-30 | 2019-05-09 | 捷开通讯(深圳)有限公司 | Data processing method based on ofdm system, and smart terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930811A (en) * | 2004-03-05 | 2007-03-14 | 三星电子株式会社 | Apparatus and method for transmitting/receiving pilot signalin communication system using OFDM scheme |
| CN101232472A (en) * | 2008-02-27 | 2008-07-30 | 上海大学 | Method for detecting OFDM signal channel mixed overlaying pilot frequency and data |
| CN101453439A (en) * | 2007-11-30 | 2009-06-10 | 北京大学 | Method for adaptively resisting interference between sub-carriers in OFDM system and OFDM apparatus |
| CN101606367A (en) * | 2007-02-09 | 2009-12-16 | Nxp股份有限公司 | Make synchronous method of multicarrier system and multicarrier system |
| CN102065047A (en) * | 2009-11-11 | 2011-05-18 | 北京泰美世纪科技有限公司 | Transmitting method and device of double-transmitting-antenna OFDM (Orthogonal Frequency Division Multiplexing) signals |
| US20140029589A1 (en) * | 2006-09-22 | 2014-01-30 | Texas Instruments Incorporated | Transmission of ack/nack bits and their embedding in the reference signal |
| CN107026809A (en) * | 2016-01-29 | 2017-08-08 | 中兴通讯股份有限公司 | A kind of data processing method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2458418B (en) * | 2006-12-19 | 2011-08-03 | Lg Electronics Inc | Sequence generating method for efficient detection and method for transmitting and receiving signals using the same |
| US20080219343A1 (en) * | 2007-03-09 | 2008-09-11 | Sharp Laboratories Of America, Inc. | Systems and methods for processing a signal within a communications system with a superimposed reference signal |
| CN101527700B (en) * | 2008-03-05 | 2012-04-25 | 华为技术有限公司 | Method and device for receiving reverse access channel RACH signals in orthogonal frequency division multiple access system |
| CN106817194B (en) * | 2015-12-01 | 2022-04-08 | 北京三星通信技术研究有限公司 | Reference signal sending method, receiving method and equipment |
| CN108055222B (en) | 2017-10-30 | 2020-09-11 | 捷开通讯(深圳)有限公司 | Data processing method based on OFDM system and intelligent terminal |
-
2017
- 2017-10-30 CN CN201711041949.6A patent/CN108055222B/en active Active
-
2018
- 2018-10-30 WO PCT/CN2018/112802 patent/WO2019085913A1/en active Application Filing
- 2018-10-30 US US16/760,456 patent/US11405255B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930811A (en) * | 2004-03-05 | 2007-03-14 | 三星电子株式会社 | Apparatus and method for transmitting/receiving pilot signalin communication system using OFDM scheme |
| US20140029589A1 (en) * | 2006-09-22 | 2014-01-30 | Texas Instruments Incorporated | Transmission of ack/nack bits and their embedding in the reference signal |
| CN101606367A (en) * | 2007-02-09 | 2009-12-16 | Nxp股份有限公司 | Make synchronous method of multicarrier system and multicarrier system |
| CN101453439A (en) * | 2007-11-30 | 2009-06-10 | 北京大学 | Method for adaptively resisting interference between sub-carriers in OFDM system and OFDM apparatus |
| CN101232472A (en) * | 2008-02-27 | 2008-07-30 | 上海大学 | Method for detecting OFDM signal channel mixed overlaying pilot frequency and data |
| CN102065047A (en) * | 2009-11-11 | 2011-05-18 | 北京泰美世纪科技有限公司 | Transmitting method and device of double-transmitting-antenna OFDM (Orthogonal Frequency Division Multiplexing) signals |
| CN107026809A (en) * | 2016-01-29 | 2017-08-08 | 中兴通讯股份有限公司 | A kind of data processing method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085913A1 (en) * | 2017-10-30 | 2019-05-09 | 捷开通讯(深圳)有限公司 | Data processing method based on ofdm system, and smart terminal |
| US11405255B2 (en) | 2017-10-30 | 2022-08-02 | JRD Communication (Shenzhen) Ltd. | Data processing method and intelligent terminal based on orthogonal frequency division multiplexing (OFDM) system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019085913A1 (en) | 2019-05-09 |
| US20200351140A1 (en) | 2020-11-05 |
| CN108055222B (en) | 2020-09-11 |
| US11405255B2 (en) | 2022-08-02 |
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